Good job! Homework #2 Done!
Totally agree with you about the stealing ranges. They can be very easily be balanced with even wider range. Depending on the opponent you can as well put a wider stealing range. Against some tight opponents who give up their blinds either preflop or postflop, why not to adjust? Against some shorties you can even steal with smaller raise, for example 3xBB. But don't overdo the stealing situations. Sometimes you might just put yourself into too many difficult spots if opening with marginal hands.
Playing PPs can be in long run be very profitable, we could even say that you earn the most money with them. You can always try out either you play them profitable or not by check the programs either you are doing great on early position with PPs or not and base according to that.
Also I do agree about AQo, the hand is strong enough to play and of course yuo can always keep track while playing in your tracker how you doing with them. 
About Question #3:
Equity Win Tie
UTG 46.32% 37.92% 8.41% { AKo }
UTG+1 53.68% 45.27% 8.41% { 88+, AJs+, KQs, AKo }
Hopefully you enjoy the Course so far.